M2-Planet

• Fixed tokenization of newline after line comment.

M2-Planet

• Added support for global initializer list for structs of integers.
• Added support for initializing global arrays of structs using initializer lists.
• Added support for prefix operators ++ and --.
• Added support for postfix operators ++ and --.
• Added ability to parse typedefs for simple function pointers.
• Added support for anonymous structs (C11 extension). This was already implemented as the only way to use unions.
• Added support for unions in all places where structs work.
• Added initial support for variable arguments.
• Added initial very hacky support for casting after dereferencing.
• Added support for calling function pointers directly on global variables and struct members. Previously only locals worked.
• Added support for initializing global variables with negative values.
• Added support for optional argument names in function pointers.
• Added support for function pointers in casts and function pointer arguments.
• Added support for array arguments to functions.
• Allow switch statement without default case.
• Various codegen optimizations.
• Added support for declaring variables in for loops.
• Added support for using includes with the --expand-includes CLI option.
• Fixed include on first line being ignored.

M2-Mesoplanet

• Look up include in directory of current file as well as CWD.
• Added support for -c (no linking).
• Added support for multiple include directories using -I.
• Added support for calling without arguments (when explicit - is used for stdin).

M2libc

• Added printf.
• Added stdarg.h header with va_arg definitions.
• Added isdigit, atoi, strdup and realloc.
• Fixed strstr function.
• Added support for "a" (append) to fopen (though it is not supported by builder-hex0).
• Fixed chroot call on x86.
• M1 define cmp was replaced with cmp_ebx,eax.
• Added fread and fwrite to bootstrap.c.

mescc-tools

• Add support for 16bit immediate constants in RISC-V.

mescc-tools-extra

bootstrap-seeds

stage0-posix-x86

• Added stdarg.h, ctype.c and cc_emit.c to kaem scripts.
• Added support for anonymous enums to cc_x86.
• Negation operator in cc_x86 now works for integers greater than 1.
• M1 define cmp was replaced with cmp_ebx,eax.

stage0-posix-amd64

• Added stdarg.h, ctype.c and cc_emit.c to kaem scripts.
• Added support for anonymous enums to cc_amd64.
• Negation operator in cc_amd64 now works for integers greater than 1.

stage0-posix-aarch64

• Added stdarg.h, ctype.c and cc_emit.c to kaem scripts.
• Added support for anonymous enums to cc_aarch64.
• Negation operator in cc_aarch64 now works for integers greater than 1.

stage0-posix-riscv64

• Added stdarg.h, ctype.c and cc_emit.c to kaem scripts.
• Added support for anonymous enums to cc_riscv64.
• Negation operator in =cc_riscv64= now works for integers greater than 1.

stage0-posix-riscv32

• Added stdarg.h, ctype.c and cc_emit.c to kaem scripts.
• Added support for anonymous enums to cc_riscv32.
• Negation operator in cc_riscv32 now works for integers greater than 1.

M2-Planet

• Added support for pointer arithmetic for += and -= operators (not yet supported for + and -).
• Added support for __LINE__ macro.
• Added support for __FILE__ macro.
• Added support for __DATE__ macro which will always be Jan 1 1970 and __TIME__ which will always be 00:00:00.
• Added support for __STDC__, __STDC_HOSTED__, and __STDC_VERSION__ macros. __STDC_VERSION__ claims support for C89.
• Added initial support for function-like macros.
• enum support.
• Added _Bool type.
• Added support for west-const for variables and function arguments.
• Improved RISC-V support to work with large types (size > 11 bits).
• Added support for octal and \? escape codes.
• Make arguments that aren't options be considered files.
• Make help output more accurately describe available options.
• Added support for multiple variable declarations per statement.
• Added support for static/inline/_Noreturn qualifiers on globals.
• Added support for static local variables.
• Make implicit return load 0 for the main function.
• Fix dereferencing char pointers (or other types whose size is not equal to register size).
• Added support for multi token integer types (unsigned int, long long, long long int, etc.).
• Allow anonymous structs/enums and inline typedef.
• Added support arrays on the stack.
• Added support for using variables in sizeof, including dereferencing.
• Added support for string literals in sizeof.
• Added support for variables in loop bodies (doesn't work with goto yet).
• Added __M2C__, __M2C_MINOR__, and __M2C_PATCHLEVEL__ defines.
• Add support for locals in loops.
• Fixed multiple chained uses of dot and arrow operators segfaulting.
• Added support for initializer lists for global integer arrays.
• Added support for global arrays without explicit size when initializer lists are used.
• Improved switch statement to support constant expressions in case statements.

M2-Mesoplanet

• Make arguments that aren't options be considered files.
• Make help output more accurately describe available options.
• Fix make install not working.

M2libc

• Convert setenv/getenv calls to use C-like pointer arithmetic.
• Add stdbool.h
• Fixed a few aarch64 syscalls.
• Add support for symlink system call.
• Make retrieving UEFI variables conform to spec.
• Removed undefined behavior in int2str.

mescc-tools

• Added support for %&! to M1 for knight architecture and allowed @$ syntax.

mescc-tools-extra

• Mount /dev/pts in the wrap environment.
• Add support for symlinks in untar.
• Switch ungz to use C-like pointer arithmetic.
• unxz: Do not crash when input file is not found.

bootstrap-seeds

• Reduced POSIX/x86/hex0-seed from 190 to 181 bytes.
• Reduced POSIX/x86/kaem-optional-seed from 640 to 632 bytes.
• Reduced POSIX/AMD64/hex0-seed from 292 to 229 bytes.

stage0-posix-x86

• Updated hex0 source to match the one in bootstrap-seeds.

stage0-posix-amd64

stage0-posix-aarch64

stage0-posix-riscv64

stage0-posix-riscv32

M2-Planet

• Added more advanced switch statement tests
• Fix a typo in the docs
• Remove VPATH from makefiles.
• add missing make ${program} targets
• Add M2-planet and M2-minimal makefile targets to .PHONY
• ensure arithmetic priority better matches the C spec

M2-Mesoplanet

• Ignore UEFI files if Linux; ignore linux files if UEFI

M2libc

• Add syscalls needed for a simple sandbox
• Fix function formatting to comply with existing standard
• Fix UEFI calling convention.
• Improve handling of relative paths in UEFI.
• Remove /./ from paths rather than convert them to ///.
• Fix file opening modes in UEFI (== has higher precedence than | )
• Add non-trivial access function to UEFI.
• Add UEFI task priority level defines.
• Add dummy stdint.h
• Fix sal_eax,cl and sal_rax,cl encoding.
• Move the utsname struct definition to sys/utsname.h
• Add dummy sys/wait.h
• A very rough prototype for strstr
• ensure needed libraries are read first for fcntl.h

mescc-tools

• Fix shebang of check.sh
• makefile: Call cleanup.sh for test12 and test13
• Remove VPATH from makefile.
• Also fix kaem's makefile

mescc-tools-extra

• Remove VPATH from makefile
• Remove obsolete comment from makefile
• Add wrap - A small bubblewrap like program
• clean up cc_*-isms
• Add a fully functional unxz program

bootstrap-seeds

• Reduced POSIX/x86/hex0-seed from 256 to 190 bytes.
• Fix UEFI bootstrap binaries.
• Fix minor typos in comments in UEFI kaem-optional
• Make sure read function works if file descriptor is longer than 1 byte.

stage0-posix-x86

• Fix encoding for sal_eax,cl

stage0-posix-amd64

• Fix encoding of some mov instructions to actually use 64-bit registers rather than 32
• Fix encoding for sal_rax,cl.

stage0-posix-aarch64

• Add M2libc/stdio.h to build sources.
• Set OPERATING_SYSTEM=Linux environmental variable.
• Fix a typo in a comment in cc_aarch64

stage0-posix-riscv64

stage0-posix-riscv32

M2-Planet

• Added support for #warning.
• Added global structs (and . operator).
• Added local structs.
• Added (u)int8_t, (u)int16_t and (u)int32_t.
• Properly remove blocks that are not used (e.g. after #if 0)
• Fixed doubly indirect structs.
• Fixed a few segfaults.
• Fixed macro expressions with ).
• Add sufficient padding when assigning global constants on 64-bit architectures.
• Fix structs greater than 512bytes in size on armv7l.

M2-Mesoplanet

• Added #warning.
• Added -D flags.
• Added support for building UEFI binaries.
• Fixed macro expressions with ).
• Fixed --no-includes option.

M2libc

• Added a memory manager for malloc() and free().
• Added getenv and setenv calls.
• Added support for building UEFI applications.

mescc-tools

• Set SHELL variable in kaem.
• Fix kaem aliases that are longer than commands.
• kaem now supports running commands with 510 command line arguments instead of 254.
• Fix quoted DEFINE statements in M1.
• hex2 added support for signed and unsigned range_check behavior.
• Fix kaem bug where unset removes the first environment variable when a token value is NULL.

mescc-tools-extra

• Added unbz2.
• Added replace utility to replace strings in file.
• Added rm to remove files.
• Added --file and --output to ungz.
• Added --verbose to untar and made default mode quiet.
• Fixed some segfaults.

bootstrap-seeds

• Reduced POSIX/x86/hex0-seed from 357 to 256 bytes.
• Reduced POSIX/x86/kaem-optional-seed from 757 to 640 bytes.
• Reduced POSIX/AMD64/hex0-seed to from 405 to 292 bytes.
• Reduced POSIX/AMD64/kaem-optional-seed from 896 to 618 bytes.
• Add NATIVE/x86/builder-hex0-x86-stage1.img seed for kernel bootstrapping.

stage0-posix-x86

• Switched M1 defines to GAS-like style.

stage0-posix-amd64

• All binaries except for kaem-optional are now position independent (PIE).
• Switched M1 defines to GAS-like style.

stage0-posix-aarch64

stage0-posix-riscv64

• Switch to lowercase M1 defines.

stage0-posix-riscv32

• Switch to lowercase M1 defines.